Windmill.



UNITED STATES PATENT OFFICE.

WILLIE G. BIRD, OF OXFORD, TEXAS.

WINDIVHLL.

SPECIFICATION forming part of Letters Patent No. 691,524, dated January 21, 1902. Application filed June 12,1901. Serial No, 64,261. (No model.)

or nut f and at the other a friction-roll f, the

'and to the letters of reference marked thereon,

which form a part of this specification.

The invention relates generally to that class of windmills in which vertical blades are employed; and it consists in certain features of improvement, which will be first described in connection with the drawings and then pointed out in the claims. 1

Figure 1 of the drawings is a plan view of the mill; Fig. 2, a side elevation showing all the parts with the wheel removed. Fig. 3 is a fragmentary front elevation of the wheel.

In the drawings, A represents the wheel; 13, the shaft which it rotates; O, the frame which turns on its center in the usual manner, and D the vane which is employed 'to bring the concave faces of the blades a to the wind by turning said frame. The blades 0. are set at a slight angle to the circular braces A A have concave working faces, and are connected with the hub A by the oppositelyarranged braces A A The wheel is therefore well braced and able to endure any incidental strains, while its hub consists of a somewhat lengthy cone which fits tightly upon a correspondingly conical journal b,so that it will readily turn the shaft and yet may be quickly forced ofi the journal, if it is desired to remove the wheel.

E is a round block fast to the shaft B and provided with the irregular slot 6, which extends around the shaft-block.

F is a wrist-pin having at one end the head latter intended to work in the slot 6. This pin F is made fast to the upper end of the arm g of a crank-lever G, which is fulcrumed at or near the vertex of its angle to the frame-brace H, while the other arm g has near its free end the holes g g In the hole g is hooked the upper end of a plunger-rod I, to which a vertical reciprocating motion is to be given, so as to operate a pump or any other machine. Through the other hole g passes a cord, rope, or chain J, which also goes down through the central hole 0 of the frame or turn-table. This cord J is connected at its upper end with the vane D, which is hinged to the frame, so that it may be pulled into a position parallel to the wheel, and thereby throw the latter from r the wind.

The brake or checking action is due to the increased friction produced by a pull on the cord J or to the direct restraining force of the cord upon the lever G, which opposes its motion upward and to the right.

'What I claim as new is 1. The combination with a wind-wheel and its frame, a shaft rotated by it and a vane pivoted to said frame at the opposite end of shaft, of the circular block E fast on shaft and having the irregular slot e, the wrist-pin F and the crank-lever G, the latter being fulcrumed at or near its angles vertex to the frame-brace-H for the purpose set forth.

2. In a windmill, the vaneD hinged to the frame and combined with the crank-lever G and a cord I passing through a hole g thereof; whereby the wheel may be simultaneously thrown from thewind and astop-brake ap plied in the manner described.

In testimony whereof I affix my signature in presence of two witnesses;

WILLIE G. BIRD.

Witnesses:

R. B. RATLIFF, J. R. RHODES. 

